> Whether a good is fungible is a a subjective thing. It’s a continuum, but not particularly subjective. The degree to which something is an equivalent good d

> Whether a good is fungible is a a subjective thing. It’s a continuum, but not particularly subjective. The degree to which something is an equivalent good depends on how people treat the item in question. They may both be religious books but I doubt you’d find many people ambivalent if they are buying a Bible or Quran. They evaluate a used car based on mileage, but people are far more picky about content.